P0011 on 2013-2016 Chevrolet Silverado 3500 6.0L: Causes and Fixes

What's Unique About the 2013-2016 Chevrolet SILVERADO 3500

For the GM 6.0L V8 (L96) engine in this truck, the P0011 code is frequently a direct result of oil health and pressure. The VVT system is extremely sensitive, and issues often begin with low oil levels, incorrect oil viscosity, or oil that has degraded and formed sludge. Several manufacturer TSBs for these trucks point directly to issues with the camshaft position actuator solenoid sticking or binding, or advise checking oil pressure with a mechanical gauge when this code appears, confirming it's a known and specific issue on this platform.

Diagnostic Flowchart

Tap your situation to follow the diagnostic path that matches what you're seeing on this vehicle.

Symptoms You May Notice

• Check Engine Light is on
• Rough, unstable idle
• Engine stalling, especially at low speeds or when coming to a stop
• Poor acceleration or sluggish performance
• Reduced fuel economy
• Rattling or clicking noise from the engine on startup
• Hard starting or crank-no-start condition [PIE0359A]
• Traction Control or Stabilitrak warning light may illuminate, as the ECU can disable these systems when a critical engine fault like P0011 is detected.

Most Likely Causes

1. Low or Dirty Engine Oil 🔴 High Probability The VVT system is entirely dependent on oil pressure and cleanliness. The small passages in the actuator solenoid can easily become restricted by sludge or debris from old oil or cheap oil filters. These engines can consume oil, so running with a low level is a common trigger.
   How to confirm: Check the engine oil level on the dipstick and examine its color and consistency. If the level is low or the oil is dark, gritty, or sludgy, it needs to be changed. This is always the first step.
   Typical fix: Perform an oil and filter change using the manufacturer-recommended oil viscosity (typically 5W-30 Dexos-approved synthetic oil).
   Est. part cost: $40-$80
2. Faulty Camshaft Position Actuator Solenoid (VVT Solenoid) 🔴 High Probability → Shop Engine Camshaft This is a well-documented failure point on many GM engines. The internal spool valve can stick or the fine mesh screens can get clogged with debris, preventing proper oil flow. This is explicitly mentioned in TSB #PIP5130G as a potential cause for P0011 and is the most common part to fail. [PIP5130G]
   How to confirm: With the engine off, unplug the solenoid and remove it (it's held by one 10mm bolt on the front of the driver's side cylinder head). Inspect the screens for debris or tearing. A multimeter can be used to check resistance, which should be between 7-12 Ohms. A scan tool with bidirectional controls can also command the solenoid to check its response. 🎬 See how to diagnose and test VVT solenoids yourself.
   Typical fix: Replace the Camshaft Position Actuator Solenoid. It is highly recommended to use an OEM ACDelco part to avoid premature failure.
   Est. part cost: $30-$85
3. Worn Timing Chain or Faulty Tensioner ⚪ Low Probability → Shop Engine Timing Chain At very high mileage (typically over 150,000 miles), the timing chain can stretch, or the tensioner can weaken, causing excessive slack. This allows the camshaft timing to deviate from what the ECM expects, especially during RPM changes.
   How to confirm: This is an involved diagnosis. A rattling noise from the front of the engine is a common symptom. A mechanic would need to remove the timing cover to physically inspect the chain and tensioners for slack or damage. A scan tool may show a camshaft position that is consistently lagging or erratic.
   Typical fix: Replace the timing chain, sprockets, and tensioners. This is a labor-intensive job.
   Est. part cost: $200-$400

Rare But Worth Checking

• Failing Camshaft Phaser (Actuator Gear): → Shop Engine Camshaft While the solenoid is more common, the mechanical phaser gear on the end of the camshaft can fail internally. This often produces a distinct rattling or knocking sound at startup before oil pressure builds. In some cases, owners have replaced the solenoid and sensor with no luck, only to find the phaser itself was the culprit.
• Low System Oil Pressure: If the oil pump is failing or the pickup tube O-ring has hardened and cracked, overall engine oil pressure can be too low to operate the VVT system correctly, especially when warm at idle. This is a serious issue that will affect the entire engine, with P0011 being just one symptom. TSBs #PIP5258 and #PIP5258A specifically advise checking oil pressure with a mechanical gauge if the cause of P0011 is not obvious, as a worn #2 cam bearing can also cause a localized pressure drop to the actuator. [PIP5258, PIP5258A]

Diagnosis Steps

1. Check the engine oil level and condition. Top off or change the oil and filter if necessary. Use the correct viscosity oil (5W-30 Dexos-approved). This simple step fixes the issue a surprising amount of the time.
2. Scan for other DTCs. If codes like P0010 or P0521 are present, they can help pinpoint the issue to the solenoid circuit or overall oil pressure.
3. Inspect the wiring and connector for the Bank 1 intake camshaft position actuator solenoid (driver's side, front of the cylinder head). Look for damage, corrosion, or loose connections.
4. With the engine off, remove the actuator solenoid. It is held in by a single 10mm bolt. Inspect the mesh screens for metallic debris or sludge. Clean screens can sometimes restore function temporarily, but replacement is recommended if they are clogged.
5. If the solenoid appears clean, you can test its coil with a multimeter. Resistance should be between 7-12 ohms. You can also test it by applying 12V to its terminals to see if the internal pintle moves, but do not apply power for more than 1-2 seconds.
6. A common DIY diagnostic is to swap the intake solenoid with the exhaust solenoid (if identical) or the Bank 2 intake solenoid (passenger side). Clear the codes and drive the vehicle. If the code changes to P0014 (exhaust) or P0021 (Bank 2), the solenoid is confirmed bad.
7. If the solenoid and oil are good, the next step is to check engine oil pressure with a mechanical gauge, as recommended by TSB #PIP5258A. Pressure at hot idle should be above 20 PSI, and at 1,000 RPM it should be above 24 PSI. [6, PIP5258A] If it's dropping low, suspect a failing oil pump, pickup tube O-ring, or worn cam bearings.
🎬 Watch: How a bad O-ring causes low oil pressure.
8. If oil pressure is good, the problem may be a stretched timing chain or a faulty camshaft phaser, which requires more in-depth mechanical diagnosis.

Parts You'll Likely Need

• Camshaft Position Actuator Solenoid (VVT Solenoid) (OEM #12679099) — This is the most frequent cause of P0011. The solenoid gets clogged with debris or sticks internally, preventing it from correctly adjusting the camshaft timing. The original part number was 12655420, which has been superseded by 12679099.
  Trusted brands: ACDelco (OEM), Delphi, Dorman
  OEM price range: $45-$85
  Aftermarket price range: $25-$50

Related Codes That Often Appear With This One

• P0010 — P0010 indicates a problem with the electrical circuit for the same VVT solenoid. If you see both, suspect a wiring issue, a bad connector, or a completely failed solenoid with an open or shorted coil.
• P0521 — P0521 indicates a problem with the Engine Oil Pressure Sensor/Switch. Seeing this code alongside P0011 strongly suggests the root cause is a genuine low oil pressure condition, which should be investigated immediately.

Technical Service Bulletins (TSBs) & Recalls

• PIE0359A: Mentions stalling with DTC P0011.
• PIP5258 / PIP5258A: Advise checking oil pressure if the root cause for P0011 is not found, and specifically to check the #2 cam bearing.
• PIP5130G: Points to a sticking or binding camshaft position actuator solenoid valve as a cause for P0011 and intermittent crank/no-start issues. [PIP5130G]

Platform-Specific Known Issues

• TSB #PIP5130G notes that the camshaft position actuator solenoid valve may be sticking or binding, causing this code along with crank/no-start conditions. The TSB provides a procedure to cycle the solenoid with a scan tool or manually to un-stick it. [PIP5130G]
• TSB #PIP5258A specifically calls out checking engine oil pressure with a mechanical gauge if a technician is unable to find the root cause for P0011 after following standard diagnostics. It further suggests inspecting the #2 cam bearing, which supplies oil to the actuator, for wear. [PIP5258A]
• A forum user on SilveradoSierra.com with a high-mileage 6.0L battling a persistent P0011 code found that switching to a slightly thicker 10W-30 oil temporarily resolved the issue, which pointed to worn cam bearings causing a loss of oil pressure when the oil was hot and thin.

Mechanic-Grade Diagnostic Values

• Camshaft Position Actuator Solenoid Resistance — expected: 7-12 Ohms. Failure: A reading of 0 Ohms (short) or infinite Ohms (open) indicates a failed coil.
• Engine Oil Pressure (Mechanical Gauge, Hot Idle) — expected: Above 20 PSI. Failure: Pressure dropping significantly below 20 PSI at hot idle points to a lubrication system problem (e.g., oil pump, pickup tube O-ring).
• Engine Oil Pressure (Mechanical Gauge, Warm at 1,000 RPM) — expected: Above 24 PSI. Failure: Pressure below 24 PSI at 1,000 RPM confirms a lubrication issue.
• Scan Tool Camshaft Position Variance (Desired vs. Actual) — expected: Near 0 degrees at idle. Failure: The actual cam position is stuck or does not respond when the desired value changes with RPM, or the variance is consistently high.

Scan Tool Commands That Help

• GDS2 (GM Dealer Tool) or equivalent: Camshaft Position Actuator Solenoid Control — This bidirectional command allows a technician to command the solenoid to advance or retard timing while watching the actual camshaft position PID. It directly tests if the solenoid and phaser are responding, helping to isolate a faulty solenoid from a stuck phaser or wiring issue.

Wiring & Ground Locations

• Engine Block to Chassis Ground — A ground strap runs from the rear of the engine block to the firewall/chassis. On the driver's side, a key ground point is on the back of the cylinder head.. A poor engine ground can cause erratic sensor readings and incorrect operation of solenoids. The ECM and its sensors rely on a stable ground reference. While not a direct cause of P0011, poor grounds can create a host of electrical issues that mimic component failure.
• G218 Ground — Located inside the cab, behind the driver's side kick panel, under the dash.. This is a major interior ground point. While less likely to cause a specific engine code like P0011, a known issue on this truck platform involves insulation getting caught under the ground nut, causing a poor connection and widespread, seemingly random electrical problems.
• VVT Solenoid Connector — On the front of the driver's side cylinder head, connecting to the camshaft position actuator solenoid.. This is the direct connection for the solenoid. One pin should have battery voltage (~12V) with the key on, and the other is the Pulse Width Modulated (PWM) ground signal from the ECM. Checking for voltage here is a key step in diagnosing a P0010 (circuit fault) and can help rule out wiring issues for P0011.

Real Owner Repair Stories

• Forum posts and TSB documentation (2007-2010 GM Truck with 6.0L V8 (Applies to 2013-2016 models)) — Persistent P0011 code, rough idle, stalling.
  ❌ Tried (didn't work) Replacing the VVT solenoid (sometimes multiple times with aftermarket parts), Performing multiple oil changes, Replacing the camshaft position sensor
  ✅ What actually fixed it The problem was low oil pressure at hot idle. The final fix was replacing the oil pump pickup tube O-ring, which had become hard and cracked, allowing air into the oil system. This directly aligns with the advice in GM TSB #PIP5258A.
• Reddit user comment in r/ChevyTrucks (General GM Truck with 5.3L/6.0L V8) — Low oil pressure at idle, which can trigger P0011.
  ❌ Tried (didn't work) Replacing the oil pressure sensor.
  ✅ What actually fixed it A diagnostic trick confirmed a bad oil pump pickup tube O-ring. By parking the truck facing steeply downhill, the oil pooled at the front of the pan, submerging the pickup tube and temporarily overcoming the air leak from the bad O-ring, causing oil pressure to rise to normal levels. This pointed to the O-ring as the definitive cause.

OEM Part Supersession History

• 12655420 → 12679099 — Part has been updated by GM for improved design, materials, and longevity.
  Heads up: The new part number 12679099 is the correct and direct replacement for older numbers including 12655420, 12628347, and 12578517. There are no known incompatibility issues when using the OEM superseded part.

Model Year Variations Within This Range

• 2015-2016: In 2015, the Silverado HD platform received a major refresh with an all-new exterior and interior design. However, the 6.0L L96 V8 engine and 6L90 transmission, including the VVT system components relevant to code P0011, remained unchanged from the 2013-2014 models.